Electroluminescent device containing electroluminescent particles each covered with moisture proof film

Abstract

An electroluminescent device comprises a luminous layer containing electroluminescent particles each covered with a moisture-proof film, which is formed by polymer, having network structure obtained by hydrolyzing metal alkoxide and causing polycondensation reaction. The moisture-proof film may contain pigment, or a film containing pigment may be formed to cover the electroluminescent particle.

What is claimed is: 
     
       1. An electroluminescent device comprising: emitter means containing electroluminescent particles; and   means for applying an electric field to said emitter means,   each of said electroluminescent particles being covered with a moisture-proof film of an inorganic polymer containing silica having network structure obtained y hydrolyzing metal alkoxide and causing polycondensation reaction polymer.   
     
     
       2. An electroluminescent device in accordance with claim 1, wherein pigment is dispersed in said moisture-proof film. 
     
     
       3. An electroluminescent device in accordance with claim 1, wherein said moisture-proof film is formed on the surface of each said electroluminescent particle. 
     
     
       4. An electroluminescent device in accordance with claim 3, further including a film containing pigment, said film containing pigment being formed on the surface of said moisture-proof film.   
     
     
       5. An electroluminescent device in accordance with claim 1, further including a film containing pigment formed on the surface of each said electroluminescent particle, said moisture-proof film being formed, on the surface of said film containing pigment.